Legal claims defining the scope of protection, as filed with the USPTO.
1. An active matrix liquid crystal display device comprising a pair of substrates facing each other with a liquid crystal layer held therebetween, one of the substrates including: a plurality of gate lines and a plurality of data lines intersecting to form a matrix; thin film transistors in a vicinity of intersections of the gate lines and the data lines, the thin film transistors having drain electrodes, gate electrodes connected to the gate lines and source electrodes connected to the data lines; and pixel electrodes connected to the drain electrodes of the thin film transistors, wherein the gate lines, the data lines, the thin film transistors, and the pixel electrodes are formed on a surface of the one substrate adjacent to the liquid crystal layer, the other substrate including, on a surface thereof adjacent to the liquid crystal layer, a plurality of counter electrodes formed in a direction perpendicular to the gate lines on the one substrate, each of the counter electrodes facing at least one column of the pixel electrodes, wherein a magnitude of a voltage applied to a particular counter electrode decreases as the thin film transistors opposing the counter electrode increase in distance from a source of signals to the gate lines.
2. An active matrix liquid crystal display device according to claim 1 , wherein the plurality of counter electrodes are respectively connected to power supplies that supply different voltages to each counter electrode.
3. An active matrix liquid crystal display device according to claim 1 , wherein the plurality of counter electrodes are respectively connected to a plurality of output terminals of a voltage controller, the voltage controller being connected to a power supply and generating voltages of different magnitudes at different output terminals of the plurality of output terminals.
4. An active matrix liquid crystal display device according to claim 1 , wherein a magnitude of a voltage applied to the liquid crystal layer disposed between a particular thin film transistor and a particular counter electrode is independent of a position of the particular thin film transistor.
5. An active matrix liquid crystal display device according to claim 1 , wherein voltages applied to the liquid crystal layer disposed between a particular thin film transistor and a particular counter electrode have a symmetric magnitude and alternate polarity.
6. A method of reducing flicker of images in active matrix liquid crystal display device, the method comprising: providing a plurality of gate lines and a plurality of data lines intersecting to form a matrix, thin film transistors in a vicinity of the intersections, the thin film transistors having drain electrodes, gate electrodes connected to the gate lines and source electrodes connected to the data lines, and pixel electrodes connected to the drain electrodes; providing a plurality of counter electrodes formed in a direction perpendicular to the gate lines with liquid crystal therebetween, each of the counter electrodes facing at least one column of the pixel electrodes; and decreasing magnitudes of voltages applied to the counter electrodes as a distance of the corresponding thin film transistors increase from a source of signals to the respective gate lines.
7. The method according to claim 6 , further comprising supplying different voltages to each counter electrode.
8. The method according to claim 6 , further comprising supplying different voltages via a single power supply.
9. The method according to claim 6 , further comprising applying a magnitude of a voltage to the liquid crystal layer disposed between a particular thin film transistor and a particular counter electrode independent of a position of the particular thin film transistor.
10. The method according to claim 6 , further comprising applying voltages of symmetric magnitude and alternating polarity to the liquid crystal layer disposed between a particular thin film transistor and a particular counter electrode.
11. An active matrix liquid crystal display device comprising a pair of substrates facing each other with a liquid crystal layer held therebetween, one of the substrates including: a plurality of gate lines and a plurality of data lines intersecting to form a matrix; thin film transistors in a vicinity of intersections of the gate lines and the data lines, the thin film transistors having drain electrodes, gate electrodes connected to the gate lines and source electrodes connected to the data lines; and pixel electrodes connected to the drain electrodes of the thin film transistors, wherein the gate lines, the data lines, the thin film transistors, and the pixel electrodes are formed on a surface of the one substrate adjacent to the liquid crystal layer, the other substrate including, on a surface thereof adjacent to the liquid crystal layer, a plurality of counter electrodes formed in a direction perpendicular to the gate lines on the one substrate, each of the counter electrodes facing at least one column of the pixel electrodes, wherein a summation of negative and positive voltages are applied in a symmetric manner to the liquid crystal layer changes as the thin film transistors opposing the counter electrode increases in distance from a source of signals to the gate lines.
12. An active matrix liquid crystal display device according to claim 11 , further comprises a power supply connected to the particular electrode, wherein the power supply transmits the positive and negative voltages applied to the liquid crystal layer.
13. An active matrix liquid crystal display device according to claim 12 , further comprises a plurality of resistors coupled to the power supply and the particular counter electrode.
14. An active matrix liquid crystal display device comprising a pair of substrates facing each other with a liquid crystal layer held therebetween, one of the substrates including: a plurality of gate lines and a plurality of data lines intersecting to form a matrix; thin film transistors in a vicinity of intersections of the gate lines and the data lines, the thin film transistors having drain electrodes, gate electrodes connected to the gate lines and source electrodes connected to the data lines; and pixel electrodes connected to the drain electrodes of the thin film transistors, wherein the gate lines, the data lines, the thin film transistors, and the pixel electrodes are formed on a surface of the one substrate adjacent to the liquid crystal layer, the other substrate including, on a surface thereof adjacent to the liquid crystal layer, a plurality of counter electrodes formed in a direction perpendicular to the gate lines on the one substrate, each of the counter electrodes facing at least one column of the pixel electrodes, wherein a magnitude of differing voltages are applied in a symmetric manner to a particular counter electrode as the thin film transistors opposing the counter electrode increases in distance from a source of signals to the gate lines.
15. An active matrix liquid crystal display device comprising a pair of substrates facing each other with a liquid crystal layer held therebetween, one of the substrates including: a plurality of gate lines and a plurality of data lines intersecting to form a matrix; thin film transistors in a vicinity of intersections of the gate lines and the data lines, the thin film transistors having drain electrodes, gate electrodes connected to the gate lines and source electrodes connected to the data lines; and pixel electrodes connected to the drain electrodes of the thin film transistors, wherein the gate lines, the data lines, the thin film transistors, and the pixel electrodes are formed on a surface of the one substrate adjacent to the liquid crystal layer, the other substrate including, on a surface thereof adjacent to the liquid crystal layer, a plurality of counter electrodes formed in a direction perpendicular to the gate lines on the one substrate, each of the counter electrodes facing at least one column of the pixel electrodes, wherein a magnitude of a voltage applied to a particular counter electrode changes as the thin film transistors opposing the counter electrode increases in distance from a source of signals to the gate lines.
Unknown
September 16, 2003
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